Acoustic Thermal Shield With Embedded Patch
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing acoustic and thermal protection screens for motor vehicles face challenges with multilayer patches that require specific fixings and complex manufacturing processes, often exceeding allocated volume and increasing costs, due to the need for protrusions and bonding operations.
Innovation Solution
Integrating a multilayer thermal protection patch into the shell's volume, where it is confined by a reflective metal covering layer, eliminating the need for specific fixings and simplifying the manufacturing process by using a non-bonded, embossed metal sheet configuration that is retained within a housing defined by the shell's compressed zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a multilayer thermal protection patch is attached by creating a protrusion, then the patch can be fixed in place, but the screen exceeds the allocated volume
Solution Approach 1:
The patent embeds the thermal protection patch within a housing formed by compressed zones of the shell, nesting the patch inside the existing structure rather than adding external protrusions. The housing is created by locally compressing the porous shell material to form a cavity that receives and contains the patch, eliminating volume excess while maintaining secure fixation.
2Reliability
If specific fixings (rivets, adhesive) are used to attach the patch, then the patch can be securely fixed, but the manufacture of the screen is complicated and costs increase
Solution Approach 1:
The patent employs the reflective metal covering layer to perform the fixation function itself by adhering to the housing and securing the patch in place. The covering layer acts as both a protective element and a fixation mechanism, eliminating the need for separate rivets, adhesives, or other specialized fixing components, thereby simplifying manufacturing and reducing costs.
3Stability of the object's composition
If multilayer patch layers are associated by crimping or peripheral folding, then the patch maintains structural integrity, but the production of the screen is complicated
Solution Approach 1:
The patent combines the functions of holding the patch layers together and securing the patch to the housing into a single integrated solution. The reflective metal covering layer simultaneously maintains the association of the patch layers and fixes the entire patch assembly to the housing, eliminating the need for separate crimping or peripheral folding operations and thereby increasing production efficiency.
4Temperature
If a localized thermal protection patch is added, then thermal performance is improved, but the device complexity increases
Solution Approach 1:
The patent applies thermal protection locally by placing a patch only in the specific zone requiring enhanced thermal resistance, rather than uniformly across the entire screen. The housing is formed by localized compression of the shell, and the reflective metal covering is applied only where needed, maintaining simplicity while providing targeted thermal protection where most required.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution ensures the patch fits within the allocated volume, reduces manufacturing complexity and costs, and maintains thermal performance while optimizing weight and cost by using a localized, partially covering reflective layer with perforations for acoustic wave absorption.
Implementation Method 1
adding a layer to the surface of said shell that reflects infrared radiation (aluminum strip, aluminized film, etc.)
Implementation Method 2
The thermal protection function can be linked directly to the intrinsic thermal insulation properties of the shell
Implementation Method 3
the patch being confined in the housing, the depth of which corresponds to the thickness of said patch
Implementation Method 4
the layer 9 is provided with a plurality of perforations 10, so as to allow passage of the acoustic waves within the housing 6 and the shell 2 with a view to their absorption
Data Source
Figure 1~2
AI summary
The shield (1) has a shell (2) containing porous material and including an internal face (3) and an external face (4). A compressed zone (5) of the shell defines a housing (6) at a side of the internal face. A thermal protection patch (7) includes a stack of embossed metal sheets (8). The sheets are unbonded with each other. The patch is placed in the housing, where thickness of the patch corresponds to depth of the housing. A reflective metal covering layer (9) is adhered to the internal face to maintain the patch in the housing. : An independent claim is also included for a method for realizing a shield. USE : Acoustic and thermal protection shield for a car. ADVANTAGE : The patch is integrated in volume of the shell, so that risk that the shield cannot hold the patch and the shell in the allocated volume, is avoided while the fixation of the patch does not require utilization of specific fasteners, and the patch is maintained by the covering layer. The sheets are unbonded with each other, so that the shield can be manufactured in a simple manner. DESCRIPTION OF DRAWINGS : The drawing shows a schematic view of an acoustic and thermal protection shield. 1 : Acoustic and thermal protection shield 2 : Shell 3 : Internal face 4 : External face 5 : Compressed zone 6 : Housing 7 : Thermal protection patch 8 : Embossed metal sheets 9 : Reflective metal covering layer.